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D55379.1793976746.diff
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D55379.1793976746.diff
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diff --git a/usr.sbin/bhyveload/bhyveload.c b/usr.sbin/bhyveload/bhyveload.c
--- a/usr.sbin/bhyveload/bhyveload.c
+++ b/usr.sbin/bhyveload/bhyveload.c
@@ -169,11 +169,9 @@
{
struct cb_file *cf;
struct stat sb;
- int fd, flags;
+ int fd;
cf = NULL;
- fd = -1;
- flags = O_RDONLY | O_RESOLVE_BENEATH;
if (hostbase_fd == -1)
return (ENOENT);
@@ -185,20 +183,21 @@
if (filename[0] == '\0')
filename = ".";
- if (fstatat(hostbase_fd, filename, &sb, AT_RESOLVE_BENEATH) < 0)
- return (errno);
-
- if (!S_ISDIR(sb.st_mode) && !S_ISREG(sb.st_mode))
- return (EINVAL);
-
- if (S_ISDIR(sb.st_mode))
- flags |= O_DIRECTORY;
-
/* May be opening the root dir */
- fd = openat(hostbase_fd, filename, flags);
+ fd = openat(hostbase_fd, filename, O_RDONLY | O_RESOLVE_BENEATH);
if (fd < 0)
return (errno);
+ if (fstat(fd, &sb) < 0) {
+ int serrno = errno;
+
+ close(fd);
+ return (serrno);
+ } else if (!S_ISDIR(sb.st_mode) && !S_ISREG(sb.st_mode)) {
+ close(fd);
+ return (EINVAL);
+ }
+
cf = malloc(sizeof(struct cb_file));
if (cf == NULL) {
close(fd);
@@ -217,7 +216,6 @@
return (ENOMEM);
}
} else {
- assert(S_ISREG(cf->cf_stat.st_mode));
cf->cf_isdir = 0;
cf->cf_u.fd = fd;
}
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D55379: bhyveload: simplify cb_open() and eliminate minor TOCTOU
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